CN106023281A - Manufacture method of grating developed image - Google Patents
Manufacture method of grating developed image Download PDFInfo
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- CN106023281A CN106023281A CN201610344008.9A CN201610344008A CN106023281A CN 106023281 A CN106023281 A CN 106023281A CN 201610344008 A CN201610344008 A CN 201610344008A CN 106023281 A CN106023281 A CN 106023281A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/203—Drawing of straight lines or curves
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
- G06T1/0021—Image watermarking
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Abstract
The invention provides a manufacture method of a grating developed image. The method comprises the following steps that a main printing image of a preset resolution is generated, a pixel length corresponding to a grating constant of a preset matching grating in the resolution is calculated by taking the length of a pixel in the preset resolution as a metering unit, multiple line segments parallel in parallel and at same interval are generated in the main printing image to form a background layer, and hidden information appeared in the matched grating is made in the background layer. The manufacture method of the grating developed image is simple in technology, the matched grating needs not to be processed, hidden information in a decryption area is unique and exclusive and is not mixed with other types of decryption tools in solution. The hidden information manufactured via the method can be directly applied to intellectual reading materials of children and teaching materials and the like, can be used to cultivate the learning interest and reading capability of the children effectively, and realize teaching in joy.
Description
Technical field
The present invention relates to print image concealing technology field, show in particular to a kind of grating
Shadow image formation method.
Background technology
Cultivation children's reading books, the interest of learning knowledge are the most important things of formative education.So
And books form that existing a lot of children of being suitable for read is dry as dust, lack novelty and interest
Taste, is difficult to evoke the learning enthusiasm of children and reading interest.For this phenomenon, at figure
Book is designed there is deciphering function " deciphering district ", and deciphered by decryption card, presumably fixed
Certain feeling of freshness and infinite enjoyment can be brought to the study of children, can yet be regarded as be one more
Feasible method.
The most domestic processing technology with image concealing technology sets foot in mostly in enterprise product
Anti-counterfeit package field in, and processing technology is the most smart, it is loaded down with trivial details to make, and developed image obscures
Unclear, even cost of manufacture virtual height, this sampling technology is not suitably applied juvenile's class books
Printing in.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of grating developed image making side
Method, is applied in figure book publishing, to cultivate the learning interest of children, forms good study
Atmosphere, reaches the purpose taught through lively activities.
The grating developed image manufacture method that present pre-ferred embodiments provides, including: generate
There is the printing master map of default resolution;Length with a pixel under described default resolution
Degree is measurement unit, calculates the grating constant pair at next preset matching grating of this resolution
The length in pixels answered;Some parallel and equally spaced straightway is generated in described printing master map
Forming background layer, the length in pixels that the live width of described straightway is corresponding is intersegmental with adjacent two straight lines
Length in pixels sum corresponding to the vertical dimension pixel corresponding equal to described grating constant long
Degree;The hiding information that described matched FBG can be used to manifest is made in described background layer,
Hiding information includes any one or more in word and figure.
Preferably, described printing master map is to generate under pattern bitmap.
Preferably, the described a length of metering with a pixel under described default resolution is single
Position, calculates the pixel the grating constant of next preset matching grating of this resolution is corresponding long
The step of degree includes: calculate in next inch of corresponding length in pixels of described default resolution;
According to calculating formulaDraw the length in pixels that the grating constant of matched FBG is corresponding, its
In, NpBeing one inch of corresponding length in pixels, f is per inch on described preset matching grating
Interior groove sum, N is the length in pixels that described grating constant is corresponding.
Preferably, described in described printing master map, some parallel and equally spaced straight line is generated
Section is formed in the step of background layer, and the angle of inclination of described straightway relatively horizontal orientation is 45
Degree, and length in pixels corresponding to the width of described straightway is intersegmental with described adjacent two straight lines
The difference of the length in pixels that vertical dimension is corresponding is less than or equal to 3 pixels more than or equal to 2 pixels, its
Described in length in pixels corresponding to the intersegmental vertical dimension of adjacent two straight lines more than described straight line
The length in pixels corresponding to width of section.
Preferably, described making in described background layer can use described matched FBG to manifest
The step of hiding information include: under grayscale mode, described background layer imports to be concealed
Information, described information to be concealed forms a new figure layer;Delete described letter to be concealed
Cease and retain the constituency of described figure layer;Again under pattern bitmap, by the figure layer constituency retained
The line segment of copy background layer forms another new figure layer, and the direction along vertical described straightway is moved
Described new figure layer, the distance of movement more than 0 less than described adjacent two straight lines intersegmental vertical away from
From corresponding length in pixels.
Preferably, the constituency of described figure layer move along the direction being perpendicular to described straightway away from
From hang down intersegmental with adjacent two straight lines of the length in pixels corresponding more than the live width of described straightway
The meansigma methods of the length in pixels sum that straight distance is corresponding and intersegmental less than described adjacent two straight lines
Length in pixels corresponding to vertical dimension.
Preferably, the method also includes: described moving along the direction of vertical described straightway
Before the constituency of figure layer, the image model of described printing master map is converted to position from grayscale mode
Chart-pattern.
Preferably, the resolution of described printing master map is 1200dpi.
Preferably, the groove sum in described matched FBG per inch is between 80~140.
Preferably, described method also includes: described matched FBG is being covered in described printing
When manifesting hiding information on master map, the groove on described matched FBG is parallel to described background
Straightway on layer.
In the grating developed image manufacture method that the present invention provides, according to preset matching grating
Length in pixels corresponding to grating constant generates some parallel and equally spaced in printing master map
Straightway, formed " deciphering region " Background From Layer, then in Background From Layer make hide
Word or figure.The technique of this manufacture method is simple, it is not necessary to carry out any to matched FBG
Process, directly by hanging down between width and adjacent two straightways of the described straightway of adjustment
Straight distance can make the development effect of matched FBG reach more visible state, and is fabricated to
" deciphering region " in hiding information there is uniqueness and exclusiveness, the most not with his class solution
Close instrument is mutually mixed to be solved.With " hiding information " made by this manufacture method, directly should
Teach in auxiliary class books for juvenile's class intellectual reading matter and teaching material, can effectively cultivate children
Learning interest and reading ability, real realization is taught through lively activities.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, below will be in embodiment
The required accompanying drawing used clearly and succinctly is introduced.The following drawings should be understood to only illustrate
Certain embodiments of the present invention, is therefore not construed as the restriction to scope, for ability
From the point of view of the those of ordinary skill of territory, on the premise of not paying creative work, it is also possible to according to this
A little accompanying drawings obtain other relevant contents.
The flow process of a kind of grating developed image manufacture method that Fig. 1 provides for the embodiment of the present invention
Figure;
The application grating developed image manufacture method that Fig. 2 provides for the embodiment of the present invention makes figure
The initial fabrication step schematic diagram of background layer during book deciphering region;
The application grating developed image manufacture method that Fig. 3 provides for the embodiment of the present invention makes figure
During book deciphering region, background layer is schematic diagram when 200% at displaying ratio;
Fig. 4 is the schematic diagram after the background layer shown in Fig. 3 imports information to be concealed;
Fig. 5 is showing after deleting information to be concealed and reservation figure layer constituency on the basis of Fig. 4
It is intended to;
The application grating developed image manufacture method that Fig. 6 provides for the embodiment of the present invention has made
The schematic diagram of the hiding information in " the deciphering region " that become;
Fig. 7 makes in application grating developed image manufacture method for what the embodiment of the present invention provided
The displacement of books deciphering region stylish figure layer calculates schematic diagram;
The application grating developed image manufacture method that Fig. 8 provides for the embodiment of the present invention makes figure
Behind book deciphering region, the film of output is drawn a design and deciphers effect schematic diagram.
Detailed description of the invention
In order to reach to make the purpose of the embodiment of the present invention, make technical scheme and making advantage more clear
Chu, below in conjunction with the accompanying drawing in the embodiment of the present invention, to the technical side in the embodiment of the present invention
Case carries out clearly, is fully described by.Obviously, described embodiment is that a part of the present invention is real
Execute example rather than whole embodiments.Generally herein described in accompanying drawing and illustrate this
The assembly of bright embodiment can be arranged with various different configurations and design.
It should also be noted that similar label and letter expression similar terms in following accompanying drawing, therefore,
The most a certain Xiang Yi accompanying drawing is defined, then need not it is carried out in accompanying drawing subsequently
Definition and explanation further.
In describing the invention, it should be noted that term " " center ", " on ", " vertically ",
Orientation or the position relationship of the instruction such as " level " are based on orientation shown in the drawings or position relationship,
It is for only for ease of and describes the present invention and simplify description rather than instruction or the making of hint indication
Method must have specific orientation, with specific azimuth configuration and operation, be not understood that
For limitation of the present invention.
Therefore, detailed description not purport to the embodiments of the invention provided in the accompanying drawings below
Limit the scope of claimed invention, but be merely representative of the selected enforcement of the present invention
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under work premise, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, be the grating developed image manufacture method of present pre-ferred embodiments offer
Flow chart, be it should be noted that grating of the present invention development pattern-producing method not with
The particular order of Fig. 1 and the following stated is for limiting.Idiographic flow shown in Fig. 3 will be entered below
Row describes in detail.
Step S101, generates the printing master map with default resolution.
In the present embodiment, available graphics software, such as Photoshop, at pattern bitmap or
A digital document with default resolution (such as 1200dpi), this numeral is generated under grayscale mode
The length and width size of file can be arranged according to actual needs, as being set to 6 cm x 6 centimetres,
Obtain described printing master map.
Step S102, with a length of measurement unit of a pixel under described default resolution,
Calculate in length in pixels corresponding to the grating constant of next preset matching grating of this resolution.
Grating constant is the distance between grating two groove, is commonly called as pitch.Owing to making printing
On master map during the hiding information in " deciphering region ", the width of required straightway can not be with millimeter
Measure, be unable to reach making purpose the most at all, therefore need with the metering list less than millimeter
Position, in the present embodiment, uses " pixel ".The length of known different resolution next one pixel
Degree is different, will calculate the length in pixels that grating constant is corresponding under described default resolution,
Firstly the need of conversing one inch of length in pixels corresponding under this default resolution, then root
According to calculating formulaDraw the length in pixels that the grating constant of matched FBG is corresponding, Qi Zhongcan
Amount NpRepresenting one inch of corresponding length in pixels, parameter f represents described preset matching grating
The groove sum that upper per inch comprises, parameter N represents that the grating constant of described matched FBG is corresponding
Length in pixels.
Step S103, generates some parallel and equally spaced straightway in described printing master map
Forming background layer, the length in pixels that the live width of described straightway is corresponding is intersegmental with adjacent two straight lines
Length in pixels sum corresponding to the vertical dimension pixel corresponding equal to described grating constant long
Degree.
After calculating the grating constant of described matched FBG, generate some parallel in printing master map
And equally spaced straightway forms background layer.Wherein, the pixel that the width of described straightway is corresponding
A length of N1, length in pixels corresponding to vertical dimension between adjacent two straightways is N2。N1With
N2The sum length in pixels and adjacent two straightways corresponding equal to the width of N, i.e. straightway it
Between length in pixels sum corresponding to vertical dimension equal to the grating constant pair of described matched FBG
The length in pixels answered.
Preferably, the some straightway relatively horizontal orientations generated have certain inclination angle
Degree, such as 45 degree, and length in pixels corresponding to the width of straightway and described adjacent two straight lines
The difference of the length in pixels that intersegmental vertical dimension is corresponding is less than or equal to 3 pictures more than or equal to 2 pixels
Element, length in pixels corresponding to the intersegmental vertical dimension of the most adjacent two straight lines is more than described straight line
The length in pixels corresponding to width of section, i.e. N2With N1Difference be less than or equal to more than or equal to 2 pixels
3 pixels, and N2>N1。
Step S104, makes in described background layer and described matched FBG can be used to manifest
The information of hiding, hiding information includes any one or more in word and figure.
The specific implementation making hiding information to be manifested in background layer is, gray scale mould
Under formula, importing information to be concealed in described background layer, described information to be concealed is formed
One new figure layer;Then delete described information to be concealed and retain the constituency of described figure layer,
And the image model of printing master map is converted to pattern bitmap by grayscale mode;Artwork in place again
Under formula, with the true lines of the figure layer constituency copy background layer retained, formed and newly scheme layer, and
Described new figure layer is moved in direction along vertical described straightway, the distance of movement should be greater than 0 and
The length in pixels that the vertical dimension intersegmental less than adjacent two straight lines is corresponding, newly schemes the line segment of layer
Mobile to its former position between affiliated straightway and adjacent straightway.
Preferably, when moving described new figure layer along the direction of vertical described straightway, it is
After shift position be in the line segment of new figure layer former belonging to straightway and adjacent straightway
Between the position of upper middle.Specifically, described new figure layer is along being perpendicular to described straightway
The distance that moves of the direction length in pixels corresponding more than the live width of described straightway with adjacent
The meansigma methods of the length in pixels sum that the intersegmental vertical dimension of two straight lines is corresponding and less than described
The length in pixels that the intersegmental vertical dimension of adjacent two straight lines is corresponding, the distance i.e. moved should be greater than
(N2+N1)/2 and less than N2。
So far, completing of the hiding information printed on master map in " deciphering region ".Made
" deciphering region " film can be gone out draw a design or be printed as book, more described matched FBG is covered
" deciphering region " develops.During it should be noted that matched FBG is decrypted development,
It covers when " deciphering region " is upper, grating line should with in background layer when making " deciphering region "
Straightway parallel, the most just can present optimal deciphering effect, hiding information could be clear
Clear displays.Such as, it is 45 when the angle of inclination of shown straightway relatively horizontal orientation
When spending, when matched FBG is decrypted development, the optimum incline angle of its groove relatively horizontal orientation
Degree is also 45 degree, and that now hides information manifests best results.
It addition, in the present embodiment, the hiding information in " deciphering region " has and preferably makes effect
When fruit refers to be decrypted development by described matched FBG, " information hidden " can clearly may be used
See, just look at less than zebra-stripe (due to grating material the diffraction of light is formed chequered with black and white
Striped, is commonly called as zebra-stripe).At the hiding letter completed on one-step print master map in " deciphering region "
After the making of breath, can judge to make effect according to this judgment criteria, if dissatisfied, the most repeatable
Above-mentioned making step also finely tunes hanging down between the width of described straightway, adjacent straight line segment accordingly
The parameters such as the angle of inclination of straight distance and straightway relatively horizontal orientation are to reach final satisfied
Making effect.
The grating developed image manufacture method that the present embodiment provides is particularly suited for making books solution
Close region." deciphering region " is applied and teaches auxiliary class books at juvenile's class intellectual reading matter and teaching material
In, little readers can be allowed to experience novelty, then produce learning interest, effectively promote child
Learning capacity.The most just as a example by making books deciphering region, it is specifically described the present embodiment and carries
The specific implementation of the grating developed image manufacture method of confession.
When making books deciphering region, the resolution of printing master map should be 1200dpi, and presets
The groove sum that matched FBG should be in per inch is the column mirror grating between 80~140, originally shows
Example uses the post mirror light that groove sum in per inch is 100 delete.
After the resolution determining printing master map and matched FBG, needs calculate and in resolution are
Under 1200dpi, the length in pixels that the grating constant of matched FBG is corresponding, concrete calculating process
Being referred to, but be not limited to, following method realizes:
After the length of known 1200dpi next one pixel, utilize the side of computer scale comparison
Method, show that the conversion formula between 1 millimeter and this resolution next one pixel is 1 millimeter of ≈ 47
Pixel.Have again, 1 inch=2.54 centimetres=25.4 millimeters, so obtaining 1 inch=25.4 millis
Rice ≈ 25.4 × 47 pixel ≈ 1193.8 pixel.
Afterwards, calculating formula is usedDraw the pixel that the grating constant of matched FBG is corresponding
Length, wherein NpApproximating 1193.8 pixels, f is equal to 100, finally obtains N and approximates
10.938 pixels, in order to easy to make, obtain integer value 11 picture after being rounded up by N here
The column mirror grating of a 100 grooves length in pixels under with 1200dpi in element, i.e. per inch
During for measurement unit, length in pixels corresponding to its grating constant is 11 pixels.
After obtaining the length in pixels that the grating constant of matched FBG is corresponding, and then it needs to be determined that straight
The vertical dimension pair between length in pixels and adjacent two straightways corresponding to the width of line segment
The length in pixels answered.Straightway the most slightly or too carefully all can affect the making effect in " deciphering region ",
The color lump blackout making to be hidden in the word in " deciphering region " or figure is presented the most slightly is sent out by line segment
Secretly, the most unsightly, line segment too carefully may not reach again the purpose of hidden text or figure, so
The line segment choosing proper width is particularly significant.Finding after repeatedly practice, the width of straightway should
Less than the vertical dimension between adjacent two straightways, and differ from 2~3 pixels between the two and be advisable, this
The color lump of the implicit word in " deciphering region " that sample is not only imprinted on books will not turn black obfuscation,
And can preferably hidden text or figure.Thus, in this example, the straight line used
The width of section is 4 pixels, and the vertical dimension between adjacent two straightways is 7 pixels, both it
The length in pixels corresponding with the grating constant being exactly equal to matched FBG.
Based on above-mentioned preparation, the hiding letter in " deciphering region " will be specifically described below
The manufacturing process of breath, as follows:
First, at described graphics software, in Photoshop, perform newly-built-pattern-bitmap,
Generating a dimensional parameters is 6 cm x 6 centimetres, and resolution is the digital document of 1200dpi,
Obtain printing master map.
Secondly, in described printing master map, each one width of picture is straightway and the width of 4 pixels
Being the straightway of 7 pixels, the angle of inclination of two line segment relatively horizontal orientations is 45 degree, its
In, width is that the straightway of 7 pixels uses as the interim spacing that adjusts.
Again, in printing master map, copy straightway that described width is 4 pixels once, and
Being grayscale mode by image mode transform, image shows and changes 300% into, and adjusting two width is
Spacing between 4 pixel straightways, making the most only to be spaced a width is the straight of 7 pixels
Line segment, as shown in Figure 2.Then the straightway that this width is 7 pixels is deleted, and viscous with copy
The straightway that the Form generation of patch is some parallel and equally spaced width is 4 pixels, such as Fig. 3
Background layer in the printing master map showing under 200% displaying ratio.
Finally, background layer adds word to be concealed, as shown in Figure 4, then chooses literary composition
Word, deletes word to be concealed reservation figure layer constituency (dashed region shown in Fig. 5), then
The true lines utilizing the figure layer constituency copy background layer retained in background layer are formed newly schemes layer, and
Utilize arrow to move described new figure layer along the direction of vertical described straightway, make line segment that mistake to occur
Position, and the lines that copied of new figure layer should move the position of the upper middle between adjacent two line segments
It is set to preferably, specifically refer to Fig. 6.
For the movement of new figure layer, can use after first moving horizontally certain distance, more vertically move
Dynamic mode realizes newly scheming vertically moving of the relatively straight line segment of layer.Assume with d1Represent new figure layer
Move horizontally distance, d2Represent the vertical displacement of new figure layer, as it is shown in fig. 7, can obtain:
Wherein β=45 °
Have again:Obtain 1.5 < x≤2.
Wherein, this boundary condition of x≤2 allows for newly scheming layer and should move between two line segments
The position of upper middle and set.In different embodiments, different limits can be used
Dividing value limits " upper middle " this position so that the hiding information in " deciphering region " obtains
Obtain and preferably make effect.
After hiding information in " deciphering region " completes, the film can be gone out and draw a design or be printed as
Book, and matched FBG (decryption card) covering is decrypted on " deciphering region ".Institute in Fig. 8
The film being shown as output is drawn a design and covers the schematic diagram after matched FBG is decrypted development.
It addition, in order to make dullness matched FBG sheet more beautiful, can print in lenticular lenses and
The exquisite pattern that books are relevant, makes lovely 3D stereotome, to excite little reader's
Buy books desire.
Especially, it should be noted that, the manufacture method of this grating development figure is applicable not only to
Existing lenticular lenses, it is also possible to make in common PVC (polrvinyl chloride) clear plastic articles
With.Difference is: there is not groove on common PVC transparent plastic sheet, it is not necessary to calculate
The length in pixels that grating constant is corresponding, direct self manufacture two parafacies " pitch " plate together is (front
The background layer stated), a pair is imprinted on PVC transparent plastic sheet as printed panel, forms one and treats
Matched FBG sheet, another pair then be used for make the hiding information in " deciphering region ",
Manufacture method is ditto described, does not repeats them here.
In sum, the technique of the grating developed image manufacture method that the present invention provides is simple,
Without matched FBG being carried out any process, directly by finely tune described straightway width with
And the vertical dimension between adjacent two straightways can make the development effect of matched FBG reach
More visible state, and the hiding information in " the deciphering region " that be fabricated to has uniquely
Property and exclusiveness, mutually the most mixed with his class decoding tool solve.The most also this kind can be made
The hiding information in " deciphering region " made by method, directly applies to juvenile's class knowledge
Property reading matter and teaching material teach in auxiliary answer class books, can effectively cultivate the learning interest of children
And reading ability, real realization is taught through lively activities.
The foregoing is only the preferred embodiments of the present invention, be not limited to this
Bright, for a person skilled in the art, the present invention can have various modifications and variations.
All within the spirit and principles in the present invention, any modification, equivalent substitution and improvement made
Deng, should be included within the scope of the present invention.
Claims (10)
1. a grating developed image manufacture method, it is characterised in that described method includes:
Generate the printing master map with default resolution;
With a length of measurement unit of a pixel under described default resolution, calculate
The length in pixels that the grating constant of next preset matching grating of this resolution is corresponding;
In described printing master map, generate some parallel and equally spaced straightway form background
Layer, length in pixels corresponding to the live width of described straightway intersegmental with adjacent two straight lines vertical away from
From the length in pixels that corresponding length in pixels sum is corresponding equal to described grating constant;
The hiding information that described matched FBG can be used to manifest is made in described background layer,
Hiding information includes any one or more in word and figure.
Grating developed image manufacture method the most according to claim 1, its feature exists
In, described printing master map generates under pattern bitmap.
Grating developed image manufacture method the most according to claim 1, its feature exists
In, the described a length of measurement unit with a pixel under described default resolution, calculate
Go out the step in length in pixels corresponding to the grating constant of next preset matching grating of this resolution
Suddenly include:
Calculate in next inch of corresponding length in pixels of described default resolution;
According to calculating formulaShow that pixel corresponding to the grating constant of matched FBG is long
Degree, wherein, NpBeing one inch of corresponding length in pixels, f is on described preset matching grating
Groove sum in per inch, N is the length in pixels that described grating constant is corresponding.
Grating developed image manufacture method the most according to claim 1, its feature exists
In, described generate in described printing master map some parallel and equally spaced straightway formed the back of the body
In the step of background layer, the angle of inclination of described straightway relatively horizontal orientation is 45 degree, and
Vertical intersegmental with described adjacent two straight lines of length in pixels that the width of described straightway is corresponding
The difference of the length in pixels that distance is corresponding is less than or equal to 3 pixels, Qi Zhongsuo more than or equal to 2 pixels
State length in pixels corresponding to the intersegmental vertical dimension of adjacent two straight lines more than described straightway
The length in pixels that width is corresponding.
Grating developed image manufacture method the most according to claim 1, its feature exists
In, the described hiding letter that making can use described matched FBG to manifest in described background layer
The step of breath includes:
Under grayscale mode, described background layer imports information to be concealed, described to be concealed
Information form a new figure layer;
Delete described information to be concealed and retain the constituency of described figure layer;
Again under pattern bitmap, the line segment of the figure layer constituency copy background layer by retaining is formed
Another new figure layer, and move described new figure layer along the direction of vertical described straightway, movement
Distance is less than the length in pixels that the intersegmental vertical dimension of described adjacent two straight lines is corresponding more than 0.
Grating developed image manufacture method the most according to claim 5, its feature exists
The distance moved along the direction being perpendicular to described straightway in, described new figure layer more than described directly
Length in pixels corresponding to the live width of the line segment vertical dimension intersegmental with adjacent two straight lines is corresponding
The meansigma methods of length in pixels sum and the vertical dimension pair intersegmental less than described adjacent two straight lines
The length in pixels answered.
Grating developed image manufacture method the most according to claim 5, its feature exists
In, the method also includes:
Before move the constituency of described figure layer along the direction of vertical described straightway, by described
The image model of printing master map is converted to pattern bitmap from grayscale mode.
Grating developed image manufacture method the most according to claim 1, its feature exists
In, the resolution of described printing master map is 1200dpi.
Grating developed image manufacture method the most according to claim 8, its feature exists
In, the groove total value in described matched FBG per inch is between 80~140.
Grating developed image manufacture method the most according to claim 1, its feature exists
In, described method also includes:
Described matched FBG is covered in manifest hiding information on described printing master map time,
Groove on described matched FBG is parallel to the straightway on described background layer.
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CN104859329A (en) * | 2015-05-22 | 2015-08-26 | 陕西科技大学 | Moire pattern anti-fake method based on linear grating |
CN105405359A (en) * | 2015-12-29 | 2016-03-16 | 上海宏盾防伪材料有限公司 | Optical color change device with watermark characteristic |
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CN106931893A (en) * | 2017-03-10 | 2017-07-07 | 黄攸平 | The method that grating thin slice pitch is accurately measured based on refraction principle |
CN110210471A (en) * | 2019-07-19 | 2019-09-06 | 南京环印防伪科技有限公司 | A kind of image information area location structure and image information area acquisition methods for image rectification |
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